hello, i've been working on a presentation for my hospital commitee and now i get the message "format error found in.." and can't open it. i've already tried some things i read in this forum like converting to zip, modifying content.xml file but it doesn't work.I'd be really grateful if anybody could help me

It is very difficult to help you without seeing your .odp file.Please share it.

Or use one of the working backup files. Have you some backup files, haven't?(Always create time stamped backups of your important document...)

Tibor Kovacs, Hungary; LO6.1.6, 6.2.8 /Win7-10 x64Prof.PortableApps/winPenPack: LO3.3.0-6.4.3;AOO4.1.7Please, edit the initial post in the topic: add the word [Solved] at the beginning of the subject line - if your problem has been solved.